40258425526861 has 4 divisors (see below), whose sum is σ = 40324099957372. Its totient is φ = 40192751096352.

The previous prime is 40258425526841. The next prime is 40258425526873. The reversal of 40258425526861 is 16862552485204.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 434816272836 + 39823609254025 = 659406^2 + 6310595^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40258425526861 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40258425526796 and 40258425526805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40258425526841) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32837214336 + ... + 32837215561.

It is an arithmetic number, because the mean of its divisors is an integer number (10081024989343).

Almost surely, 2^{40258425526861} is an apocalyptic number.

It is an amenable number.

40258425526861 is a deficient number, since it is larger than the sum of its proper divisors (65674430511).

40258425526861 is an equidigital number, since it uses as much as digits as its factorization.

40258425526861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65674430510.

The product of its (nonzero) digits is 36864000, while the sum is 58.

The spelling of 40258425526861 in words is "forty trillion, two hundred fifty-eight billion, four hundred twenty-five million, five hundred twenty-six thousand, eight hundred sixty-one".